Dr Romain Guilbaud

International Lecturer (BJTU)

Research Overview

I am a biogeochemist interested in the chemical evolution of the Earth’s environment. I combine multidisciplinary approaches including field geology, geochemistry (both inorganic and isotopic) and experimental work, in order to address the processes that have shaped the Earth’s surface through geologic time.

More specifically, my research interests focus on:

  • The design of experimental protocols addressing key geochemical processes in the environment. I am interested in a range of redox sensitive minerals (Fe sulphides and (oxyhydr)oxides), their nucleation, growth, surface charge chemistry and how they interact with nutrients and metals.

  • The behaviour of “non-traditional” isotope systems (in particular Fe, U and Cu) under diagenetic conditions.

  • The development of geochemical tools which allow to evaluate the redox chemistry of ancient environments.

  • The cycling of nutrients and bio-essential metals in modern and ancient oceans, with implications for a co-evolving life.

Oxygen minimum zones in the early Cambrian ocean
Guilbaud, R., Slater, B.J., Poulton, S.W., Harvey, T.H., Brocks, J., Nettesheim, B.J., Butterfield, N.J. 1/03/2018 In: Geochemical Perspectives Letters. 6, p. 33-38. 6 p.
Journal article

A palaeoecological model for the late Mesoproterozoic – early Neoproterozoic Atar/El Mreïti Group, Taoudeni Basin, Mauritania, northwestern Africa
Beghin, J., Guilbaud, R., Poulton, S.W., Gueneli, N., Brocks, J.J., Storme, J., Blanpied, C., Javaux, E.J. 09/2017 In: Precambrian Research. 299, p. 1-14. 14 p.
Journal article

A cryptic record of Burgess Shale-type diversity from the early Cambrian of Baltica
Slater, B.J., Harvey, T.H., Guilbaud, R., Butterfield, N.J. 1/01/2017 In: Palaeontology. 60, 1, p. 117-140. 24 p.
Journal article

Low-oxygen waters limited habitable space for early animals
Tostevin, R., Wood, R.A., Shields, G.A., Poulton, S.W., Guilbaud, R., Bowyer, F., Penny, A.M., He, T., Curtis, A., Hoffmann, K.H., Clarkson, M.O. 23/09/2016 In: Nature Communications. 7, 9 p.
Journal article

A global transition to ferruginous conditions in the early Neoproterozoic oceans
Guilbaud, R., Poulton, S.W., Butterfield, N.J., Zhu, M., Shields-Zhou, G.A. 18/05/2015 In: Nature Geoscience. 8, 6, p. 466-470. 5 p.
Journal article

Dynamic redox conditions control late Ediacaran metazoan ecosystems in the Nama Group, Namibia
Wood, R.A., Poulton, S.W., Prave, A.R., Hoffmann, K.H., Clarkson, M.O., Guilbaud, R., Lyne, J.W., Tostevin, R., Bowyer, F., Penny, A.M., Curtis, A., Kasemann, S.A. 1/05/2015 In: Precambrian Research. 261, p. 252-271. 20 p.
Journal article

Assessing the utility of Fe/Al and Fe-speciation to record water column redox conditions in carbonate-rich sediments
Clarkson, M.O., Poulton, S.W., Guilbaud, R., Wood, R.A. 29/08/2014 In: Chemical Geology. 382, p. 111-122. 12 p.
Journal article

Surface charge and growth of sulphate and carbonate green rust in aqueous media
Guilbaud, R., White, M.L., Poulton, S.W. 1/05/2013 In: Geochimica et Cosmochimica Acta. 108, p. 141-153. 13 p.
Journal article

Response to comment on "Abiotic pyrite formation produces a large Fe isotope fractionation"
Guilbaud, R., Butler, I.B., Ellam, R.M. 3/02/2012 In: Science. 335, 6068, 1 p.

On the influence of diagenesis on the original petrographic composition of Miocene-Pliocene fluvial sandstone in the Himalayan foreland basin of western-central Nepal
Guilbaud, R., Bernet, M., Huyghe, P., Erens, V., Chirouze, F., Dupont-Nivet, G. 30/01/2012 In: Journal of Asian Earth Sciences. 44, p. 107-116. 10 p.
Journal article

Abiotic pyrite formation produces a large Fe isotope fractionation
Guilbaud, R., Butler, I.B., Ellam, R.M. 24/06/2011 In: Science. 332, 6037, p. 1548-1551. 4 p.
Journal article

Significance of the clay mineral distribution in fluvial sediments of the Neogene to Recent Himalayan Foreland Basin (west-central Nepal)
Huyghe, P., Guilbaud, R., Bernet, M., Galy, A., Gajurel, A.P. 06/2011 In: Basin Research. 23, 3, p. 332-345. 14 p.
Journal article

Experimental determination of the equilibrium Fe isotope fractionation between Feaq2+ and FeSm (mackinawite) at 25 and 2°C
Guilbaud, R., Butler, I.B., Ellam, R.M., Rickard, D., Oldroyd, A. 15/05/2011 In: Geochimica et Cosmochimica Acta. 75, 10, p. 2721-2734. 14 p.
Journal article

Fe isotope exchange between Fe(II)aq and nanoparticulate mackinawite (FeSm) during nanoparticle growth
Guilbaud, R., Butler, I.B., Ellam, R.M., Rickard, D. 15/11/2010 In: Earth and Planetary Science Letters. 300, 1-2, p. 174-183. 10 p.
Journal article

A procedural development for the analysis of 56/54Fe and 57/54Fe isotope ratios with new generation IsoProbe MC-ICP-MS
Guilbaud, R., Ellam, R.M., Butler, I.B., Gallagher, V., Keefe, K. 10/2010 In: Journal of Analytical Atomic Spectrometry. 25, 10, p. 1598-1604. 7 p.
Journal article